Vice, changing menu key from F12?

Hi there, ive installed VICE on my pi, and would like to install it in piMAME, however, there is a snag.. i cant do anything, becausde i cant access the main menu.. why? i hear you ask, because it is inside my C64 case using the C64 keyboard via Keyrah... and the C64 doesnt have F12..

is there some way i can change the menu key in Vice? to something like, say F9... ?